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Windows 7: Pc turns and off every few secs, any ideas

25 May 2012   #1
Monster212

Win-7 H-Prem-x64 Linux-M-Mate-x64
 
 
Pc turns and off every few secs, any ideas

ok i have a computer and i built it so maybe i did something wrong. but as soon as i hit the power switch on the back of the power supply the pc turns on all fans and stuff start up then about 6 secs latter it turns off, then 6 secs latter back on and keeps doing this untill i plug the power supply.....

specs

Case= RAIDMAX SMILODON ATX-612WBP Black 1.0mm SECC Steel ATX Mid Tower Foldout MB Computer Case
mother board = Intel DP55KG Extreme Series Desktop Motherboard (P55 ATX Core i7 Core i5 LGA1156)
Graphics Card =EVGA nVidia GeForce GTS 250 1 GB DDR3 2DVI/HDTV PCI-Express Video Card 01G-P3-1158-TR
Memory = Samsung MV-3V2G4 2GB DDR3 SDRAM Desktop Memory Module (1333MHz PC3-10600) 6gb have 6 gb total
DVD DRIVE = Lite-On LightScribe 24X SATA DVD+/-RW Dual Layer Drive IHAS424-98 - Retail (Black)
MediaCard reader = Dynex Media Card Reader
Power Supply = ROCKETFISH GAMING CPU POWER SUPPLY 500W RF-500WPS2
CPU = Intel Core i3 Processor i3-540 3.06GHz 4MB LGA1156 CPU BX80616I3540
Hard Drive = 500gb 3.5" desktop sata hard drive wd5000aaks
cpu cooler = Genuine Intel COPPER Base Core i3 530 540 550 560 CPU Heatsink Fan socket 1156


My System SpecsSystem Spec
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25 May 2012   #2
PooMan UK

Windows 7 Ultimate 64bit
 
 

Sounds like your PSU (power supply unit) is knackered
My System SpecsSystem Spec
25 May 2012   #3
Monster212

Win-7 H-Prem-x64 Linux-M-Mate-x64
 
 

so i should go buy a new power supply and that should work???
My System SpecsSystem Spec
.

25 May 2012   #4
PooMan UK

Windows 7 Ultimate 64bit
 
 

Well if you could borrow one from a friend, just to test would be a good start, but if you can't then save your pennies and look at buying a new one.
Try and go for a 650W or above just incase
My System SpecsSystem Spec
25 May 2012   #5
dsperber

Windows 7 Pro x64 (1), Win7 Pro X64 (2)
 
 

Quote   Quote: Originally Posted by Monster212 View Post
so i should go buy a new power supply and that should work???
Or maybe your fans aren't working (specifically the CPU cooler) and the machine is shutting down for thermal protection because the temperature is rising rapidly over some extreme point.

Of course that wouldn't really explain why it would spontaneously then power itself back on 6 seconds later. This is the curious part of the story. I would have thought "power off" (for whatever reason) is permanent.

Does the BIOS on your motherboard have some fan/noise settings, which because of where they're set (for reduced noise) possibly have the fans running at too low a speed to cool the machine? I wouldn't think this could cause the exceeding of a critical temperature limit within 6 seconds, but I'm just asking.

Certainly an interesting story.
My System SpecsSystem Spec
25 May 2012   #6
Monster212

Win-7 H-Prem-x64 Linux-M-Mate-x64
 
 

i cant even get into bios does not let me on log enough and nothing shows on my screen.... maybe a bad graphics card????
My System SpecsSystem Spec
25 May 2012   #7
jimpz

Win 7 Pro
 
 

If it's shutting off/turning on that quick & you just built it, I'd suspect a short, probably under the motherboard.
I'd check that all the standoffs are in the right position & there isn't one out of place making contact with the motherboard.

Jim
My System SpecsSystem Spec
25 May 2012   #8
dsperber

Windows 7 Pro x64 (1), Win7 Pro X64 (2)
 
 

No beep codes from the BIOS? Often the hardware tries to communicate to you if it is operational and can at least detect a recognizable hardware problem, with the beep pattern codes documented in the "troubleshooting" section of the manual, or on the manufacturer's web site or through their support phone. But if you're not even getting that, forget that idea.

Did you describe your memory as 3 sticks of identical 2GB = 6GB?

Can you disconnect all of the non-critical peripheral components (e.g. DVD drive and SATA hard drive and USB-internal (presumably) card reader, and even video card) and just have the CPU and memory installed. Then see what happens, Pull both power cables and data cables from them, and remove the video card. See if that makes any difference in what happens at boot time.

I'd certainly expect a beep code indicating no video, but the question is does the machine stay on long enough to communicate this beep code or does it still power itself off in 6 seconds.
My System SpecsSystem Spec
25 May 2012   #9
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

NVidia says that card uses a maximum of 150 watts. They recommend a 450 watt power supply, if you decide you need a new one. That Rocketfish you have may have gone south.
My System SpecsSystem Spec
25 May 2012   #10
Monster212

Win-7 H-Prem-x64 Linux-M-Mate-x64
 
 

i am going to try another power supply and see if thats it.... also i will unhook everything and just have the cpu and see what happens... and no beep code at all...
My System SpecsSystem Spec
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 Pc turns and off every few secs, any ideas




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